Precision Higgs couplings in neutral naturalness models: an effective field theory approach

Journal Article · Fri Feb 26 00:00:00 EST 2021 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/jhep02(2021)234· OSTI ID:1851183

Heurtier, Lucien ^[1]; Li, Hao-Lin ^[2]; Song, Huayang ^[1]; Su, Shufang ^[1]; Su, Wei  ^[3]; Yu, Jiang-Hao ^[4]

---

1. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics
2. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Theoretical Physics. CAS Key Lab. of Theoretical Physics
3. Univ. of South Australia, Adelaide, SA (Australia). Dept. of Physics. ARC Centre of Excellence for Particle Physics at the Terascale
4. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Theoretical Physics. CAS Key Lab. of Theoretical Physics; Univ. of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences; Univ. of Chinese Academy of Sciences, Hangzhou (China). Hangzhou Inst. for Advanced Study. School of Fundamental Physics and Mathematical Sciences

The Higgs sector in neutral naturalness models provides a portal to the hidden sectors, and thus measurements of Higgs couplings at current and future colliders play a central role in constraining the parameter space of the model. We investigate a class of neutral naturalness models, in which the Higgs boson is a pseudo-Goldstone boson from the universal SO(N)/SO(N - 1) coset structure. Integrating out the radial mode from the spontaneous global symmetry breaking, we obtain various dimension-six operators in the Standard Model effective field theory, and calculate the low energy Higgs effective potential with radiative corrections included. We perform a χ² fit to the Higgs coupling precision measurements at current and future colliders and show that the new physics scale could be explored up to 2.3 (2.4) TeV without (with) the Higgs invisible decay channels at future Higgs factories. The limits are comparable to the indirect constraints obtained via electroweak precision measurements.

• Research Organization: Univ. of Arizona, Tucson, AZ (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Natural Science Foundation of China (NSFC)
• Grant/Contract Number: SC0009913; 11875003; 11947302
• OSTI ID: 1851183
• Journal Information: Journal of High Energy Physics (Online), Vol. 2021, Issue 2; ISSN 1029-8479
• Publisher: Springer Nature
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Physics
Supersymmetry Phenomenology